Regular Expressions 101

Pro

1st Alternative^\d{10}(?=\s)

^start of line

\d{10}a Unicode decimal digit, repeated exactly 10 times

Positive Lookahead(?=\s)

\sa Unicode whitespace character

2nd Alternative(?<=")\d{10}(?=")

Positive Lookbehind(?<=")

"the literal " (34₁₀ / 42₈ / 22₁₆)

\d{10}a Unicode decimal digit, repeated exactly 10 times

Positive Lookahead(?=")

"the literal " (34₁₀ / 42₈ / 22₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

^\d{10}(?=\s)|(?<=")\d{10}(?=")

New

1545994641 INFO: ...
and

'{"deliveryDate":"1545994641","error"..."}'